#include<stdio.h>
int main(int argc, char *argv[])
{
	unsigned char num1 = 0b1010;
	num1 = num1 | 1u<<2;
	printf("%d\n", num1);
	
	num1 = num1 & ~(1u<<3);
	printf("%d\n",num1);
	return 0;
}
